The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-557-5906, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is International Organization for Standardization (iso). Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-557-5906 |
| Primary Part Number | ISO4017-M12X45-8.8-A2D |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | International Organization for Standardization (iso) |
| Status | ACTIVE |
| Head Height | 8.18 MILLIMETERS NOMINAL MM |
| Fastener Length | 53.18 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 1.75 |
| Thread Length | 45.0 MILLIMETERS NOMINAL MM |
| Material Document and Classification | ISO 4017 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 12.0 MILLIMETERS MM |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 18.0 MILLIMETERS NOMINAL MM |
| Surface Treatment | ZINC OVERALL |
| Minimum Tensile Strength | 800 MEGAPASCALS |
| Minimum Yield Strength | 640 MEGAPASCALS |
| Thread Class | 6G G |
| Material | STEEL OVERALL |
| Thread Series Designator | ISO M |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| ISO4017-M12X45-8.8-A2D PRIMARY | International Organization for Standardization (iso) (CHE) |
| ISO4017-M12X45-8.8-A2D | Metric and Multistandard Components Corp (USA) |
| Reference | Meaning |
|---|---|
| ISO4017-12X45-8.8-A2D | 5/9 Secondary reference International Organization for Standardization (iso) |
NSN 5305-01-557-5906 is a Screw,cap,hexagon Head, manufactured by International Organization for Standardization (iso), classified under FSC 5305, Screws. Status: active.
NSN 5305-01-557-5906 has 2 manufacturer part numbers on file: ISO4017-M12X45-8.8-A2D (International Organization for Standardization (iso)), ISO4017-M12X45-8.8-A2D (Metric and Multistandard Components Corp).
Key specifications for ISO4017-M12X45-8.8-A2D: Head Height: 8.18 MILLIMETERS NOMINAL MM; Fastener Length: 53.18 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 1.75; Thread Length: 45.0 MILLIMETERS NOMINAL MM. 15 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.